Highly conductive and transparent single-walled carbon nanotube thin films from ethanol by floating catalyst chemical vapor deposition

Ding, Er‐Xiong; Jiang, Hua; Zhang, Qiang; Tian, Ying; Laiho, Patrik; Hussain, Aqeel; Liao, Yongping; Wei, Nan; Kauppinen, Esko I.

doi:10.1039/c7nr05554d

Cited by 49 publications

(61 citation statements)

References 43 publications

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“…[35] In this process, CO or ethanol are used as a carbon source, and CO 2 are sometimes introduced as an additional gas. [36,37] The film obtained by filtering the gas phase contains very long, high-quality SWNTs in a random network with high uniformity (Figure 2e). Films prepared in this method are highly flexible and have an ITO-comparable sheet resistance (<80 Ω sq.…”

Section: Gas-phase Growthmentioning

confidence: 99%

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Jeon

Xiang

Shawky

et al. 2018

Advanced Energy Materials

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years, because of growing concerns over the energy security. Among different types of photovoltaics, silicon solar cells give power conversion efficiencies (PCEs) of over 26% with excellent durability. This technology has already reached the market, and the products are readily available. However as recent technologies, such as flexible smartphones and IoT (internet of things), evolve into more versatile and portable electronics, there is a shift of demand from performance-centric technologies to versatility-oriented technologies. In other words, the paradigm is shifting to flexible, wearable, and light-weight electronic devices. Energy-generating devices are also following the same path. This means that the thin-film solar cell technologies, such as organic solar cells (OSCs) [1][2][3] and perovskite solar cells (PSCs), [4,5] are considered to be the wave of the future with their critical attributes of being ultrathin (<1 mm), light-weight, and solution-processable. [6] These emerging thin-film solar cells have the potential to equal or surpass the PCE of silicon solar cells while having major advantages in terms of production cost, enhanced design and a variety of new functionalities. Furthermore, tandem photovoltaics, [7] which are combined solar cells of PSCs, silicon solar cells, [8] or OSCs, [9,10] are another new and promising category for the future photovoltaic technology. Despite different names of solar cell types, the device structure is largely the same. They commonly share the typical configuration of one photoactive layer in the center, two charge selective layers above and below the active layer, and two electrodes at each end-at least one of which has to be transparent so that sunlight can pass through it. While there has been an intense efficiency race within the emerging thin-film solar cell community, less attention has been paid to other features, such as flexibility and stability. These traits can be enhanced by using new electrodes and charge-selective layers. Not only the functionalities but also photovoltaic performance is heavily dependent on the electrode and the charge-selective layers. Many scientists around the world, thus far, have focused on these layers by developing novel materials and modifying conventional materials to push the boundaries of current thin-film photovoltaic technology.Abundant and mechanically resilient carbon allotropes are composed of carbon atoms only, yet manifest different electronic properties depending on their configurations and arrangements. Of the carbon species, carbon nanotubes (CNTs) are promising materials to be incorporated into the thin-film solar cells owing to a wide range of properties ranging from conductors to semiconductors with different bandgaps based Emerging solar cells, namely, organic solar cells and perovskite solar cells, are the thin-film photovoltaics that have light to electricity conversion efficiencies close to that of silicon solar cells while possessing advantages in having additional functionalities, facile-processability, an...

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Section: Gas-phase Growthmentioning

confidence: 99%

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Jeon

Xiang

Shawky

et al. 2018

Advanced Energy Materials

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“…Therefore, in the past decades, much efforts [7,43,48] have been devoted to improve the performance of the SWCNT-TCFs. Specifically, sulfur-assisted SWCNTs grown by the FC-CVD technique have been extensively employed to fabricate high-performance SWCNT-TCFs [48,49]. Unfortunately, in the literature the concrete impact of sulfur addition in enhancing the conductivity of the SWCNT films is ambiguous.…”

Section: Swcnts Based Transparent Conductive Filmsmentioning

confidence: 99%

“…Since, in most of the cases without sulfur, no information about SWCNT yield, morphology, structure and also the performance of the SWCNTs based films has been provided [48,49]. Consequently, the real out-turn of the sulfur addition on yield, morphology and structure of SWCNTs is ambiguous.…”

Section: Swcnts Based Transparent Conductive Filmsmentioning

confidence: 99%

“…On the contrary, our results showed that spark-produced Ni has poor catalytic activity towards the synthesis of SWCNTs in the FC-CVD method. Also, Fe is widely explored catalyst for the synthesis of SWCNTs in the FC-CVD method [48,49]. Therefore, we synthesized bimetallic catalyst particles of Co with Fe and Ni which have never been studied in the FC-CVD growth of SWCNTs.…”

Section: Swcnt Yield Dependence On Catalyst Compositionmentioning

confidence: 99%

“…In this dissertation (publication-III) we have for the first time systematically investigated the roles of sulfur on various growth characteristics of SWCNTs including their yield, morphology, chirality and film conductivity using ex-situ catalyst particles. The pre-made catalyst particles synthesized in our SDG technique, benefited us to explore independently the roles of sulfur on morphology and structure of SWCNTs, without affecting catalyst formation from their nucleation stage which is possible in conventional FC-CVD methods [48,49]. The change in catalyst composition and structure with sulfur addition itself can largely influence the growth mechanism of SWCNTs and can make sulfur role on SWCNT growth more ambiguous.…”

Section: Improving Conductivity Of Swcnt-tcfs By Sulfur Additionmentioning

confidence: 99%

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Highly conductive and transparent single-walled carbon nanotube thin films from ethanol by floating catalyst chemical vapor deposition

Abstract: We report the high yield production of highly conductive and transparent single-walled carbon nanotube films from ethanol by the FCCVD method.

Cited by 49 publications

References 43 publications

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Single‐Walled Carbon Nanotubes in Emerging Solar Cells: Synthesis and Electrode Applications

Roles of sulfur in floating-catalyst CVD growth of single-walled carbon nanotubes for transparent conductive film applications

Preparation of Carbon Allotropes Using Different Methods

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